A new road is expected to cut traffic passing through a County Durham village by 80%, and improve the quality of life for residents.
The A167 Chilton bypass opens to traffic on Monday, ahead of schedule.
The single carriageway to the west of Chilton begins at the junction with the A689 to the south and extends about 1km (1,094yd) north of the village.
The £9m scheme should also cut travelling time on the busy link road by about 20 minutes.
In the Chilton area, the road carries 18,000 vehicles per day, with a quarter of these being HGVs.
In the late 1980s a range of speed reducing measures - including pedestrian refuges and kerbside promontories - were introduced on the road through the village.
Transport Minister Dr Stephen Ladyman said: "The new bypass will bring significant benefits to the people of Chilton.
"It will remove around 80% of traffic that currently passes through the heart of the village.
"This will not only bring environmental improvements, but will also deliver road safety gains, especially for pedestrians who have to cross the existing busy road to access shops and other services."